Region 1 explains what's going on here.
Region 7
7. 1909 World Champion Pittsburgh Pirates
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122. 1999 NL Champion Atlanta Braves
-Can I interest you in a 110 win Pirate club? They face that Braves club with three Hall of Famers in the rotation. And round 1 is a 3 game series.
58. 1905 Chicago Cubs
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71. 2009 World Champion New York Yankees
-The Cubs finished third, despite scoring more than 200 runs than they allowed. At the time of this writing, this is the last Yankee World Champion.
26. 2019 AL Champion Houston Astros
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103. 1948 New York Yankees
-Listen closely for the sound of the trash can banging when the Astros face a team that, like the '05 Cubs, finished third, the '48 Yanks.
39. 1917 World Champion Chicago White Sox
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90. 1949 Boston Red Sox
-Two years shy of irreparable scandal, the not yet Black Sox take on 30 year old Ted Williams with his 191 OPS+
10. 1907 World Champion Chicago Cubs
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119. 2018 NL Champion Los Angeles Dodgers
-Another Tinker/Evers/Chance Cubs squad; another recent Dodger team that just fell short.
54. 1954 New York Yankees
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75. 1913 World Champion Philadelphia Athletics
-Another Yankee team that didn't make the postseason, despite 103 wins against a 5 Hall of Famer A's squad.
23. 1936 World Champion New York Yankees
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106. 1995 World Champion Atlanta Braves
-Yankee team #28 in the tournament - they beat the Braves team from this era that went all the way.
42. 1935 World Champion Detroit Tigers
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87. 1983 World Champion Baltimore Orioles
-24 year old Hank Greenberg with his .328/.411/.628 slashline against 22 year old Cal Ripken's World Champion Orioles.
